Ligue 1 club Toulouse protested against a French ban on advertising for gambling by wearing the slogan '???.com, censored' on their shirts during a game at Olympique Marseille on Sunday.

It replaced the name of Toulouse's shirt sponsors, online casino and poker firm 888.com.

The move followed the decision on Friday by the French Professional Football League (LFP) to ban its clubs from advertising any form of gambling and online betting.

Monaco were forced to remove advertising boards for online betting firm bwin.com before the kickoff of their Ligue 1 match against Le Mans on Saturday.

The LFP ban came after the two joint chief executives of Austrian online betting firm bwin.com Interactive Entertainment were placed under investigation earlier this month for alleged violation of French gaming laws.

Gambling is a state monopoly in France and online betting firms are banned from seeking clients on French territory.

Bwin are the shirt sponsors of Monaco and have sponsorship deals with several other Ligue 1 clubs, including Le Mans, and other leading European sides.